Check patch jobs for Fedora 28 are failing

Example: http://jenkins.ovirt.org/job/ovirt-engine_master_check-patch-fc28-x86_64/... Exception snippet: *12:12:36* Traceback (most recent call last):*12:12:36* File "/usr/bin/isort", line 6, in <module>*12:12:36* from pkg_resources import load_entry_point*12:12:36* File "/usr/lib/python2.7/site-packages/pkg_resources/__init__.py", line 3095, in <module>*12:12:36* @_call_aside*12:12:36* File "/usr/lib/python2.7/site-packages/pkg_resources/__init__.py", line 3079, in _call_aside*12:12:36* f(*args, **kwargs)*12:12:36* File "/usr/lib/python2.7/site-packages/pkg_resources/__init__.py", line 3108, in _initialize_master_working_set*12:12:36* working_set = WorkingSet._build_master()*12:12:36* File "/usr/lib/python2.7/site-packages/pkg_resources/__init__.py", line 570, in _build_master*12:12:36* ws.require(__requires__)*12:12:36* File "/usr/lib/python2.7/site-packages/pkg_resources/__init__.py", line 888, in require*12:12:36* needed = self.resolve(parse_requirements(requirements))*12:12:36* File "/usr/lib/python2.7/site-packages/pkg_resources/__init__.py", line 774, in resolve*12:12:36* raise DistributionNotFound(req, requirers)*12:12:36* pkg_resources.DistributionNotFound: The 'futures' distribution was not found and is required by isort*12:12:36* + echo ERROR: The following check failed:*12:12:36* ERROR: The following check failed:*12:12:36* + echo isort --check build/helptag.py build/helptag_checker.py build/helptag-oneline-check.py packaging/bin/engine-host-update.py packaging/bin/engine-migrate-he.py